<template>
    <div>
        <el-breadcrumb separator="/">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>用户管理</el-breadcrumb-item>
        <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>
        <el-card>
            <el-row :gutter="20">
                <el-col :span="8">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                        <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addUserDialogVisible = true">添加用户</el-button>
                </el-col>
            </el-row>
            <el-table
            :data="userList"
            style="width: 100%"
            border
            stripe>
            <el-table-column
                type="index"
                width="50">
            </el-table-column>
            <el-table-column
                prop="username"
                label="姓名"
                width="180">
            </el-table-column>
            <el-table-column
                prop="email"
                label="邮箱"
                width="180">
            </el-table-column>
            <el-table-column
                prop="mobile"
                label="电话">
            </el-table-column>
            <el-table-column
                prop="role_name"
                label="角色">
            </el-table-column>
            <el-table-column
                label="状态">
                 <template slot-scope="scope">
                    <el-switch
                    v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
                    </el-switch>
                 </template>
            </el-table-column>
            <el-table-column
                label="操作"
                width="180">
                <template slot-scope="scope">
                    <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                    <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUser(scope.row.id)"></el-button>
                    <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                        <el-button type="warning" icon="el-icon-warning" size="mini" @click="showAllotRoleDialog(scope.row)"></el-button>
                    </el-tooltip>
                </template>
            </el-table-column>
            </el-table>
            <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[1, 20, 30, 40]"
                :page-size="queryInfo.pageSize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total">
            </el-pagination>
        </el-card>
        <el-dialog
        title="添加用户"
        :visible.sync="addUserDialogVisible"
        width="50%"
        @close="addUserDialogClose">
        <el-form :model="addUserForm" :rules="addUserRules" ref="addUserRef" label-width="70px">
            <el-form-item label="用户名" prop="username">
                <el-input v-model="addUserForm.username"></el-input>
            </el-form-item>
            <el-form-item label="密码" prop="password">
                <el-input v-model="addUserForm.password" type="password"></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
                <el-input v-model="addUserForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
                <el-input v-model="addUserForm.mobile"></el-input>
            </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
            <el-button @click="addUserDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
        </el-dialog>
        <el-dialog
          title="编辑用户"
          :visible.sync="editDialogVisible"
          width="50%"
          @close="editFormDialogClose">
          <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
              <el-form-item label="用户名">
                  <el-input v-model="editForm.username" disabled></el-input>
              </el-form-item>
              <el-form-item label="邮箱" prop="email">
                  <el-input v-model="editForm.email"></el-input>
              </el-form-item>
              <el-form-item label="手机" prop="mobile">
                  <el-input v-model="editForm.mobile"></el-input>
              </el-form-item>
          </el-form>
          <span slot="footer" class="dialog-footer">
              <el-button @click="editDialogVisible = false">取 消</el-button>
              <el-button type="primary" @click="editUserInfo">确 定</el-button>
          </span>
        </el-dialog>
        <el-dialog
          title="分配角色"
          :visible.sync="allotRoleDialogVisible"
          width="50%"
          @close="allotRoleDialogClose">
          <p>当前用户：{{userInfo.username}}</p>
          <p>当前角色：{{userInfo.role_name}}</p>
          <p>分配角色：</p>
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in roleList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id">
            </el-option>
          </el-select>
          <span slot="footer" class="dialog-footer">
              <el-button @click="allotRoleDialogVisible = false">取 消</el-button>
              <el-button type="primary" @click="saveRoleInfo()">确 定</el-button>
          </span>
        </el-dialog>
    </div>
</template>

<script>

export default {
  data () {
    var checkEmail = (rule, value, cb) => {
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        return cb()
      }
      cb(new Error('请输入合法的邮箱。'))
    }
    var checkMobile = (rule, value, cb) => {
      const regMobile = /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        return cb()
      }
      cb(new Error('请输入合法的手机号。'))
    }

    return {
      addUserForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      addUserRules: {
        username: [
          { required: true, message: '请输入用户名。', trigger: 'blur' },
          { min: 3, max: 15, message: '用户名长度为3到15个字符。', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码。', trigger: 'blur' },
          { min: 3, max: 15, message: '密码长度为3到15个字符。', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱。', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号。', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱。', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号。', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]

      },
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 1
      },
      userList: [],
      total: 0,
      addUserDialogVisible: false,
      editForm: {},
      editDialogVisible: false,
      allotRoleDialogVisible: false,
      userInfo: {},
      roleList: [],
      selectedRoleId: ''
    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    async getUserList () {
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })
      if (res.meta.status !== 200) return this.$message.error('获取数据失败。')
      this.userList = res.data.users
      this.total = res.data.total
    },
    async userStateChanged (userInfo) {
      const { data: res } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
      if (res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state
        return this.$message.error('用户状态更新失败。')
      }
      this.$message.success('用户状态更新成功。')
    },
    handleSizeChange (pageSize) {
      this.queryInfo.pagesize = pageSize
      this.getUserList()
    },
    handleCurrentChange (pageNum) {
      this.queryInfo.pagenum = pageNum
      this.getUserList()
    },
    // 重置输入框表单状态
    addUserDialogClose () {
      this.$refs.addUserRef.resetFields()
    },
    // 验证表单并添加用户
    addUser () {
      this.$refs.addUserRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.post('users', this.addUserForm)
        if (res.meta.status !== 201) {
          return this.$message.error('添加用户失败。')
        }
        this.$message.success('添加用户成功。')
        this.addUserDialogVisible = false
        this.getUserList()
      })
    },
    // 展示编辑用户对话框
    async showEditDialog (id) {
      this.editDialogVisible = true
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) {
        return this.message.error('查询用户数据失败。')
      }
      this.editForm = res.data
    },
    editFormDialogClose () {
      this.$refs.editFormRef.resetFields()
    },
    editUserInfo () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.put('users/' + this.editForm.id, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })
        if (res.meta.status !== 200) {
          return this.$message.error('编辑用户失败。')
        }
        this.$message.success('编辑用户成功。')
        this.editDialogVisible = false
        this.getUserList()
      })
    },
    removeUser (userId) {
      this.$confirm('此操作将该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(async () => {
        const { data: res } = await this.$http.delete('users/' + userId)
        if (res.meta.status !== 200) {
          return this.$message.error('删除用户失败。')
        }
        this.$message({
          type: 'success',
          message: '删除成功!'
        })
        this.getUserList()
      }).catch(() => {
        this.$message({
          type: 'info',
          message: '已取消删除'
        })
      })
    },
    async showAllotRoleDialog (userInfo) {
      this.userInfo = userInfo
      // 获取所有角色列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state
        return this.$message.error('获取角色列表失败。')
      }
      this.roleList = res.data
      this.allotRoleDialogVisible = true
    },
    async saveRoleInfo () {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色。')
      }
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`,
        {
          rid: this.selectedRoleId
        })
      if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败。')
      }
      this.$message.success('更新角色成功。')
      this.getUserList()
      this.allotRoleDialogVisible = false
    },
    allotRoleDialogClose () {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style lang="less" scoped>
.el-table {
    margin-top: 16px;
    font-size: 12px;
}
</style>
